Injection piston
[化] 注射柱塞
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
Not at all. It's my pleasure.
不客气。这是我的荣幸。
Sorry, but could you kindly repeat what you just said?
抱歉，你可以重复刚刚所说的吗？
What's that?
那是什么？